Heat treatment production line of linear guide rail

Abstract

The invention belongs to the technical field of guide rail production and processing, and provides a linear guide rail heat treatment production line which comprises a feeding device, a first roller conveyor, high-frequency induction quenching equipment, a second roller conveyor, a tempering furnace, a third roller conveyor, a plate frame, a supporting frame and lifting equipment. The swing clamping device is arranged below the tempering furnace and comprises a fixing shaft, at least three pairs of swing clamping air cylinders, a pair of directional clamping air cylinders and a clamp, a transmission mechanism and a gear motor are arranged on the swing driving sides of the swing clamping air cylinders, and a push-out air cylinder is arranged on the side face of the tempering furnace. The push-out air cylinder is used for pushing out the plate frame to a plate chain conveyor on the lifting equipment. The device is reasonable in design, capable of effectively ensuring the continuity of quenching and tempering treatment of the guide rail, high in automation degree, beneficial to reducing the workload of workers and improving the comprehensive utilization rate of the tempering furnace, and suitable for large-scale popularization.

Description

Technical Field

[0001] The present invention belongs to the technical field of guide rail production and processing, and particularly relates to a heat treatment production line for linear guide rails. Background Art

[0002] Linear guide rails, also known as linear guides, sliding rails, linear guideways, and linear sliding rails, are used in linear reciprocating motion applications. They can bear a certain torque and achieve high-precision linear motion under high loads. A linear guide rail pair usually consists of a guide rail, a slider, balls (or rollers), end caps, oil nozzles, etc. The guide rail is the fixed part, made of high-strength alloy steel or stainless steel, with high-precision linear grooves on its surface; the slider is the moving part, with multiple balls or rollers installed inside; the end caps are located at both ends of the slider to fix the balls or rollers and seal against dust; the oil nozzles are used to inject lubricating oil or grease. The heat treatment of the guide rail is a key process to improve its performance. For some guide rails with relatively high comprehensive mechanical properties, such as machine tool guide rails, quenching and tempering treatment is often used. The quenching and tempering treatment includes steps such as first quenching and then high-temperature tempering, so that the guide rail obtains a good combination of strength, toughness, and plasticity. After the quenching and tempering treatment, the internal structure of the guide rail is uniform and its mechanical properties are stable, providing a good basis for subsequent finish machining and surface treatment.

[0003] Currently, the heat treatment line for linear guide rails includes an automatic loading device, a roller conveyor device, high-frequency induction quenching equipment, a tempering furnace, etc. Since existing high-frequency induction quenching equipment generally processes linear guide rails one by one, while the tempering furnace generally processes multiple guide rails simultaneously, there is a certain time difference between the two steps in processing. Therefore, after the quenching treatment of the linear guide rails in the workshop, they are conveyed offline one by one along with the conveyor, and then workers place the guide rail workpieces on the workpiece rack, and move the workpiece rack to place multiple guide rails into the tempering furnace for treatment at the same time. However, in this case, not only is the workload of the workers relatively large, but also the continuity of the heat treatment line is relatively low, affecting production efficiency.

[0004] The existing patent CN218146841U discloses an intelligent heat treatment production line, including an intelligent control system. The automatic loading system is arranged at the front end of this intelligent heat treatment production line; the roller hearth tempering furnace is arranged at the rear of the automatic loading system; the frame type hydraulic press is arranged at the rear of the roller hearth tempering furnace; the station automatic conversion device is arranged at the rear of the frame type hydraulic press. This heat treatment line can perform tempering treatment on steel plates, but if it is connected to the heat treatment line of the guide rail, the tempering treatment can only be carried out one by one, with low treatment efficiency and long treatment cycle; in addition, if a tempering furnace with a relatively long space is used, although the continuity of the heat treatment process can be ensured, the utilization rate of the tempering furnace is relatively low, and the cost of the tempering furnace is also very high. Summary of the Invention

[0005] In view of the technical problems existing in the heat treatment line of the above-mentioned guide rail, the present invention provides a heat treatment production line for linear guide rails with reasonable design, good heat treatment continuity, high automation level, which is conducive to reducing the workload of workers and improving the comprehensive utilization rate of the tempering furnace.

[0006] To achieve the above object, the technical solution adopted by the present invention is that a heat treatment production line for linear guide rails provided by the present invention includes a loading device. A first roller conveyor is arranged on the workpiece output side of the loading device. A high-frequency induction hardening device is arranged in the conveying direction of the first roller conveyor. A second roller conveyor and a tempering furnace are arranged on the workpiece output side of the high-frequency induction hardening device. A third roller conveyor is arranged at the workpiece connection side between the second roller conveyor and the high-frequency induction hardening device. The third roller conveyor is used to convey the plate frame to the second roller conveyor. The plate frame includes a frame body, on which a mesh plate and at least 5 rows of equally spaced angle plate groups are arranged. The angle plate groups are used to support workpieces. A support frame is arranged on the side of the second roller conveyor. The tempering furnace is located above both the second roller conveyor and the support frame at the same time. The tempering furnace is provided with a feed port corresponding to the second roller conveyor on the side facing the high-frequency induction hardening device, and a discharge port diagonally distributed with the feed port on the side facing away from the high-frequency induction hardening device. A lifting device for receiving materials is arranged at the discharge side of the discharge port. A plate chain conveyor is arranged at the top of the lifting device. A swing clamping device is arranged below the tempering furnace. The swing clamping device includes a fixed shaft, on which at least 3 pairs of swing clamping cylinders and a pair of directional clamping cylinders are arranged. The telescopic ends of the swing clamping cylinders and the telescopic ends of the directional clamping cylinders are both provided with clamps cooperating with the plate frame. A transmission mechanism is arranged on the swing driving side of the swing clamping cylinder. A reduction motor is arranged at the power input end of the transmission mechanism. The directional clamping cylinder and the swing clamping cylinder together lift the plate frame to a horizontal position opposite to the discharge port. A push cylinder is arranged on the side of the tempering furnace. The push cylinder is used to push the plate frame from the discharge port to the plate chain conveyor on the lifting device.

[0007] Preferably, two side rollers consistent with its length direction are arranged on both sides of the plate frame. The side rollers are used to cooperate with the clamps, and the clamping end of the clamp is provided with a U-shaped clamping opening.

[0008] Preferably, each row of angle plate groups includes 3 spaced angle plates. The included angle of the angle plates is 90 degrees and the right angle direction faces the side where the discharge port is located.

[0009] Preferably, the transmission mechanism includes a rotating shaft, on which a plurality of pairs of cams corresponding to the swing clamping cylinders one by one are arranged. A braking member is arranged on the transmission side of each cam. The braking member includes a lever bar that cooperates with the cam surface. One end of the lever bar is a free end, and a circular plate is arranged on the side of the other end. An eccentric shaft hole that penetrates and cooperates with a fixed shaft is arranged on the circular plate. A plurality of connection holes are arranged at the edge position of the circular plate. The connection holes are used to install screws, and the screws are used to connect the braking member and the hinge support arranged at the end of the swing clamping cylinder.

[0010] Preferably, the rotation plane of the cam deviates from the swing plane of the swing clamping cylinder.

[0011] Preferably, a plurality of inclined lifting rollers are arranged on the support frame. The lifting rollers are arranged close to the second roller conveyor. Support seats are arranged at both the bottom end and the high end of the lifting rollers.

[0012] Preferably, the piston rod of the swing clamping cylinder is a two-section telescopic rod.

[0013] Preferably, a transmission box for protecting the transmission mechanism is arranged on the side surface of the support frame.

[0014] Preferably, the orientation clamping cylinders are distributed near the middle position of the tempering furnace. The same pair of swing clamping cylinders are axially symmetrically distributed with respect to the two orientation clamping cylinders.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] A heat treatment production line of a linear guide provided by the present invention is provided with a swing clamping device below the tempering furnace. In addition to the plate frame on the second roller conveyor being able to carry multiple workpieces for quenching and tempering treatment, the swing clamping cylinder in the swing clamping device picks the plate frame on the second roller conveyor away from the second roller conveyor, so that the workpieces on the plate frame continue to be quenched and tempered until the plate frame carrying the workpieces is lifted flat by the cooperation of the orientation clamping cylinder and the swing clamping cylinder, and then the workpieces are pushed out by the pushing cylinder, and the plate frame together with the workpieces is conveyed to the next position by the lifting equipment. This device is reasonably designed, can effectively ensure the continuity of quenching and tempering treatment, has a high degree of automation, is beneficial to reducing the workload of workers and improving the comprehensive utilization rate of the tempering furnace, and is suitable for large-scale popularization. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 Top view of a heat treatment production line for a linear guide rail provided for the embodiment;

[0019] Figure 2 Axonometric view of the second roller conveyor, tempering furnace, swing clamping device and lifting equipment;

[0020] Figure 3 Axonometric view of the second roller conveyor, tempering furnace, swing clamping device and lifting equipment in another direction;

[0021] Figure 4 Distribution schematic diagram of the swing clamping device inside the tempering furnace;

[0022] Figure 5 Working diagram of the swing clamping device inside the tempering furnace;

[0023] Figure 6 Axonometric view of the swing clamping device provided for the embodiment;

[0024] Figure 7 Axonometric view of the cam and the brake part provided for the embodiment;

[0025] Figure 8 Cross-sectional view of the workpiece on the plate frame;

[0026] Figure 9 Axonometric view of the plate frame provided for the embodiment;

[0027] In the above figures, 1. Loading device; 2. First roller conveyor; 3. High-frequency induction hardening equipment; 4. Second roller conveyor; 5. Tempering furnace; 51. Feed inlet; 52. Discharge outlet; 6. Third roller conveyor; 7. Plate frame; 71. Frame body; 72. Mesh plate; 73. Angle plate group; 74. Side roller; 8. Support frame; 9. Swing clamping device; 91. Fixed shaft; 92. Swing clamping cylinder; 93. Directional clamping cylinder; 94. Fixture; 95. Transmission mechanism; 951. Rotating shaft; 952. Cam; 953. Brake part; 9531. Plate lever; 9532. Circular plate; 9533. Eccentric shaft hole; 9534. Connection hole; 96. Reduction motor; 97. Hinge support; 10. Pushing cylinder; 11. Lifting equipment; 12. Plate chain conveyor; 13. Lifting roller; 14. Support seat; 15. Transmission box. Detailed implementation manners

[0028] To more clearly understand the above objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. For the convenience of narration, words such as "upper", "lower", "left", and "right" hereinafter only indicate the same directions as the upper, lower, left, and right directions of the accompanying drawings themselves, and do not limit the structure.

[0029] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0030] Embodiments, such as Figures 1 - 9 As shown, a heat treatment production line for a linear guide rail provided by the present invention includes a loading device 1. A first roller conveyor 2 is arranged on the workpiece output side of the loading device 1. A high-frequency induction hardening device 3 is arranged in the conveying direction of the first roller conveyor 2. A second roller conveyor 4 and a tempering furnace 5 are arranged on the workpiece output side of the high-frequency induction hardening device 3. Among them, the loading device 1 can adopt a device with an automatic loading function to orderly convey the guide rail workpieces onto the first roller conveyor 2. The high-frequency induction hardening device 3 performs hardening treatment on each guide rail workpiece one by one, and the hardened guide rail workpieces are conveyed onto the second roller conveyor 4.

[0031] In order to improve the processing efficiency of the guide rail, a third roller conveyor 6 is provided at the workpiece connection side of the second roller conveyor 4 and the high-frequency induction hardening equipment 3 provided by the present invention. The third roller conveyor is used to convey the plate frame 7 onto the second roller conveyor 4. The plate frame 7 includes a frame body 71, on which a mesh plate 72 and at least 5 rows of equally spaced angle plate groups 73 are provided. The angle plate groups 73 are used to support the workpiece. A support frame 8 is provided on the side of the second roller conveyor 4. The tempering furnace 5 is located above both the second roller conveyor 4 and the support frame 8 at the same time. The tempering furnace 5 is provided with a feed inlet 51 corresponding to the second roller conveyor 4 on the side facing the high-frequency induction hardening equipment 3, and a discharge outlet 52 diagonally distributed with the feed inlet 51 on the side facing away from the high-frequency induction hardening equipment 3. A lifting device 11 for receiving materials is provided on the discharge side of the discharge outlet 52. A plate chain conveyor 12 is provided at the top of the lifting device 11. The plate chain conveyor 12 includes a sprocket, a chain plate and a driving motor, and the plate chain conveyor 12 can be lifted synchronously with the lifting device. A swing clamping device 9 is provided below the tempering furnace 5. The swing clamping device 9 includes a fixed shaft 91, on which at least 3 pairs of swing clamping cylinders 92 and a pair of directional clamping cylinders 93 are provided. Clamps 94 cooperating with the plate frame 7 are provided at the telescopic ends of the swing clamping cylinders 92 and the directional clamping cylinders 93. A transmission mechanism 95 is provided on the swing driving side of the swing clamping cylinder 92, and a reduction motor 96 is provided at the power input end of the transmission mechanism 95. The directional clamping cylinder 93 and the swing clamping cylinder 92 together lift the plate frame 7 to a horizontal position opposite to the discharge outlet 52. A push cylinder 10 is provided on the side of the tempering furnace 5, and the push cylinder 10 is used to push the plate frame 7 out of the discharge outlet 52 onto the plate chain conveyor 12 on the lifting device 11. Among them, the air source stations of the swing clamping cylinder 92, the directional clamping cylinder 93 and the push cylinder 10 are arranged at positions independent of the tempering furnace 5 and the support frame 8, and the air source stations are used to provide the pressure required for the actions of the swing clamping cylinder 92, the directional clamping cylinder 93 and the push cylinder 10.

[0032] Specifically, the third roller conveyor is used to convey the plate frame 7 to the second roller conveyor 4, and adopts a step-by-step conveying method, so that the guide rail workpieces coming out of the high-frequency induction hardening equipment 3 can enter the angle plates in different rows on the plate frame 7 in an orderly manner, so that the plate frame 7 conveyed by the second roller conveyor 4 carries at least 5 guide rail workpieces. The plate frame 7 on the second roller conveyor 4 can carry the guide rail workpieces for tempering treatment in the tempering furnace 5 for a certain period of time. In addition, since the high-frequency induction hardening equipment 3 continues to perform the hardening treatment of the guide rail workpieces and continuously outputs the guide rail workpieces, before the next plate frame 7 carrying the workpieces enters the tempering furnace 5, the plate frame 7 on the second roller conveyor 4 before is transferred. Further, a swing clamping device 9 is arranged below the tempering furnace 5. One pair of swing clamping cylinders 92 of the swing clamping device 9 picks up the plate frame 7 on the second roller conveyor 4 from the second roller conveyor 4 to vacate the working position for the next plate frame 7 and the workpieces it carries. The guide rail workpieces on the removed plate frame 7 will not fall off the plate frame 7 under the supporting action of the angle plates, so the guide rail workpieces on the plate frame 7 can continue the quenching and tempering treatment; the other pair of swing clamping cylinders 92 can move the plate frame 7 that is already in an inclined state further away from the position of the second roller conveyor 4 for a period of tempering treatment; the remaining pair of swing clamping cylinders 92 is reset and pre-clamps the plate frame 7 on the second roller conveyor 4.

[0033] For the guide rail workpieces that have completed the tempering treatment, the directional clamping cylinder 93 cooperates with the swing clamping cylinder 92 to lift the plate frame 7 carrying the workpieces to a horizontal position, and then the push-out cylinder 10 pushes the workpieces and the plate frame out of the furnace. The plate chain conveyor 12 on the lifting equipment 11 completely transfers the plate frame 7 to its top by horizontal conveying. The guide rail workpieces are naturally cooled at the top of the lifting equipment 11, and then the lifting equipment 11 makes a descending movement, and the plate chain conveyor 12 conveys the plate frame 7 together with the workpieces to the next position. Therefore, this device can effectively ensure the continuity of the quenching and tempering treatments, has a high degree of automation, reduces the frequency of workers in the intermediate links, and is beneficial to reducing the workload of workers; in addition, the number of guide rail workpieces undergoing heat treatment in the tempering furnace 5 is greatly increased, and the space and heat energy in the tempering furnace 5 are fully utilized. While improving the comprehensive utilization rate of the tempering furnace 5, it is also beneficial to save the space in the workshop.

[0034] Such as Figure 9As shown in the figure, in order to improve the cooperation performance between the swing clamping device 9 and the plate frame 7, two side rollers 74 that are consistent with the length direction of the plate frame 7 are provided on both sides of the plate frame 7 provided by the present invention. The side rollers 74 are used to cooperate with the fixture 94, and a U-shaped clamping opening is provided at the clamping end of the fixture 94. The swing clamping cylinder and the directional clamping cylinder 93 fork the fixture 94 to the side of the side roller 74 by means of telescoping. Especially when the fixture 94 of the swing clamping cylinder 92 maintains a forked connection relationship with the side roller 74 in its initial position, when the swing clamping cylinder 92 makes a swinging motion, it will also carry the plate frame 7 together with the guide rail workpiece for synchronous transfer. It should be noted that since the two ends of the side roller 74 are installed on the plate frame 7, its two ends will affect the pushing out of the plate frame 7 from the fixture 94. Therefore, in the process of the plate frame 7 being finally pushed out by the pushing out cylinder 10, when the fixture 94 is close to the end of the side roller 74 and one end of the plate frame 7 has been placed on the edge of the discharge port 52, the swing clamping cylinder 92 and the directional clamping cylinder 93 can retract the fixture 94 to release the clamping relationship between the fixture 94 and the side roller 74, so that the pushing out cylinder 10 and the plate chain conveyor 12 work together to complete the action of the plate frame 7 leaving the furnace.

[0035] In order to improve the heat treatment efficiency of the guide rail workpiece, each row of angle plate groups 73 provided by the present invention includes 3 angle plates that are spaced apart. The angle plates play a supporting role and do not significantly affect the heating efficiency of the tempering furnace 5 for the guide rail. In order to ensure the stability of the guide rail workpiece on the angle plates, the included angle of the angle plates provided by the present invention is 90 degrees and its right angle direction faces the side where the discharge port 52 is located. Therefore, when the guide rail workpiece is transferred to an inclined state along with the plate frame 7, the angle plates can always maintain the support for the guide rail workpiece to prevent it from falling off the plate frame 7 and falling below the tempering furnace 5.

[0036] As Figures 4 - 6As shown in the figure, in order to improve the synchronous driving performance of the transmission mechanism 95 for the swing clamping cylinder 92, the transmission mechanism 95 provided by the present invention includes a rotating shaft 951. A plurality of pairs of cams 952 corresponding to the swing clamping cylinders 92 one by one are arranged on the rotating shaft 951. A braking member 953 is arranged on the driving side of each cam 952. The braking member 953 includes a plate lever 9531 that cooperates with the cam surface of the cam 952. One end of the plate lever 9531 is a free end, and a circular plate 9532 is arranged on the side of the other end. An eccentric shaft hole 9533 that penetrates and cooperates with the fixed shaft 91 is arranged on the circular plate 9532. A plurality of connection holes 9534 are arranged at the edge position of the circular plate 9532. Screws are used to install the connection holes 9534, and the screws are used to connect the braking member 953 and the hinge support 97 arranged at the end of the swing clamping cylinder 92. Among them, the hinge support 97 rotates synchronously with the swing clamping cylinder 92. The hinge support 97 has a swinging tendency due to the pressure of the cam 952 received through the braking member 953. Fixed supports are arranged at both ends of the fixed shaft 91, and both ends of the rotating shaft 951 can be installed on a bearing seat with bearings. More specifically, the proximal end of the cam 952 is a small arc, the distal end of the cam 952 is a large arc, and the middle of the cam 952 is a transition arc. When the braking member 953 cooperates with the small arc, the swing clamping cylinder 92 is in a position biased towards the second roller conveyor 4. When the braking member 953 cooperates with the large arc, the swing clamping cylinder 92 is in a position close to the side wall of the tempering furnace 5, that is, the position of the last heat treatment station of the plate frame 7. When the braking member 953 cooperates with the transition arc, the swing clamping cylinder 92 is in a transition position from the second roller conveyor 4 to the last heat treatment station. With the periodic movement of the rotating shaft 951 and the cam 952, the swing clamping cylinder 92 realizes a cycle at multiple heat treatment stations. And during the process of the swing clamping cylinder 92 resetting from the final position to the initial position, its piston rod and the fixture 94 can also be reset to avoid affecting the movement of other plate frames 7.

[0037] As Figure 6 shown, in order to ensure the driving continuity of the cam 952 for the swing clamping cylinder 92, considering the limitations of the arc degrees of the proximal end and the distal end of the cam 952, the rotation plane of the cam 952 provided by the present invention deviates from the swing plane of the swing clamping cylinder 92. Thus, the cam 952 can have sufficient rotation space in a rotation cycle, ensuring the driving continuity and smoothness of its driving of the braking member 953.

[0038] As Figure 4 and Figure 5As shown in the figure, in order to improve the utilization rate of the space of the tempering furnace 5, the support frame 8 provided by the present invention is provided with a plurality of inclined lifting rollers 13. The lifting rollers 13 are arranged close to the second roller conveyor 4, and support seats 14 are arranged at both the bottom end and the high end of the lifting rollers 13. By arranging the lifting rollers 13 to play a supporting and guiding role, during the process of the plate frame 7 swinging with the swinging clamping cylinder 92, sliding can occur along the roller surface of the lifting rollers 13. On the one hand, the space of the tempering furnace 5 is utilized, on the other hand, the heating capacity of the tempering furnace 5 at a relatively high position is fully utilized, and on the third hand, sufficient telescopic range is left for the swinging clamping cylinder 92 to avoid the occurrence of action dead points and affect the stability of the guide rail workpiece.

[0039] In order to ensure the control performance of the swinging clamping device 9 on the position of the plate frame 7 and considering reducing the temperature influence of the tempering furnace 5 on the swinging clamping cylinder 92, the piston rod of the swinging clamping cylinder 92 provided by the present invention is a two-stage telescopic rod. The swinging clamping cylinder 92 has the ability of secondary action, and its telescopic stroke is longer than that of a single-stroke piston rod, which can ensure the lifting requirement and swinging requirement for the position of the plate frame 7. In particular, the swinging clamping cylinder 92 and the directional clamping cylinder 93 have sufficient lifting ability, and the plate frame 7 can be lifted to a position horizontally corresponding to the discharge port 52 without affecting the adjacent plate frame 7.

[0040] As Figure 3 As shown in the figure, in order to reduce the influence of the surrounding environment and workers on the transmission mechanism 95, the present invention is provided with a transmission box 15 on the side of the support frame 8 to protect the transmission mechanism 95, and the transmission box 15 plays a certain protective role, which is beneficial to improving the safety of the workshop.

[0041] As Figure 6 As shown in the figure, in order to ensure the clamping stability of the swinging clamping cylinder 92 on the plate frame 7, considering from the distribution position of the clamping nodes, the directional clamping cylinder 93 provided by the present invention is distributed close to the middle position of the tempering furnace 5, and the same pair of swinging clamping cylinders 92 are axially symmetrically distributed with respect to the two directional clamping cylinders 93. This can ensure a reasonable working span for the same pair of swinging clamping cylinders 92, which is beneficial to improving the support stability of the two swinging clamping cylinders 92 on the plate frame 7.

[0042] The above description is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A heat treatment production line for a linear guide rail, comprising a feeding device, a first roller conveyor is provided on the workpiece output side of the feeding device, a high-frequency induction quenching device is provided in the conveying direction of the first roller conveyor, a second roller conveyor and a tempering furnace are provided on the workpiece output side of the high-frequency induction quenching device, characterized in that: A third roller conveyor is provided on the workpiece connection side of the second roller conveyor and the high-frequency induction quenching equipment. The third roller conveyor is used to convey a plate frame to the second roller conveyor. The plate frame includes a frame body, and a mesh plate and at least 5 rows of equally distributed angle plate groups are provided on the frame body. The angle plate group is used to support the workpiece. A support frame is provided on the side of the second roller conveyor. The tempering furnace is located above the second roller conveyor and the support frame at the same time. The tempering furnace is provided with a feed port corresponding to the second roller conveyor on the side facing the high-frequency induction quenching equipment, and the tempering furnace is provided with a discharge port diagonally distributed with the feed port on the side facing away from the high-frequency induction quenching equipment. The discharge side of the discharge port is provided with a A lifting device, wherein a plate chain conveyor is arranged on the top of the lifting device, and a swing clamping device is arranged under the tempering furnace, wherein the swing clamping device comprises a fixed shaft, and at least three pairs of swing clamping cylinders and a pair of directional clamping cylinders are arranged on the fixed shaft, and the telescopic ends of the swing clamping cylinder and the telescopic ends of the directional clamping cylinder are both provided with clamps that cooperate with the plate frame, and a transmission mechanism is arranged on the swing driving side of the swing clamping cylinder, and a reduction motor is arranged on the power input end of the transmission mechanism, and the directional clamping cylinder and the swing clamping cylinder together lift the plate frame to a horizontal position relative to the discharge port, and a push-out cylinder is arranged on the side of the tempering furnace, and the push-out cylinder is used to push the plate frame from the discharge port to the plate chain conveyor on the lifting device.

2. A heat treatment production line for linear guide rails according to claim 1, characterized in that: Two side rollers are arranged on both sides of the plate frame in the same length direction thereof, and the side rollers are used to cooperate with the clamps, and the clamping end of the clamp is provided with a U-shaped clamping opening.

3. A heat treatment production line for linear guide rails according to claim 2, characterized in that: Each row of angle plate groups includes three angle plates distributed at intervals, the angles of the angle plates are 90 degrees and the right angle direction thereof faces the side where the discharge port is located.

4. A heat treatment production line for linear guide rails according to claim 3, characterized in that: The transmission mechanism includes a rotating shaft, on which are arranged a plurality of pairs of cams corresponding one to one with the swing clamping cylinders, a braking member is arranged on the transmission side of each of the cams, the braking member includes a plate bar matched with the wheel surface of the cam, one end of the plate bar is a free end and a circular plate is arranged on the side of the other end, the circular plate is provided with an eccentric shaft hole matched with the fixed shaft, a plurality of connecting holes are arranged at the edge of the circular plate, the connecting holes are used to install screws, and the screws are used to connect the braking member and a hinge support arranged at the end of the swing clamping cylinder.

5. A heat treatment production line for linear guide rails according to claim 4, characterized in that: The rotation plane of the cam deviates from the swing plane of the swing clamping cylinder.

6. A heat treatment production line for linear guide rails according to claim 1, characterized in that: The support frame is provided with a plurality of inclined lifting rollers, the lifting rollers are arranged close to the second roller conveyor, and the bottom and the top of the lifting rollers are both provided with support seats.

7. A heat treatment production line for linear guide rails according to claim 6, characterized in that: The piston rod of the swing clamping cylinder is a two-section telescopic rod.

8. The heat treatment production line of a linear guide rail according to claim 1, characterized in that: A transmission box for protecting the transmission mechanism is arranged on the side of the support frame.

9. A heat treatment production line for linear guide rails according to claim 1, characterized in that: The directional clamping cylinders are distributed near the middle of the tempering furnace, and the same pair of swing clamping cylinders are distributed axially symmetrically with respect to the two directional clamping cylinders.

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